ALGARVE, Portugal -- Police are focusing on one British pedophile in the investigation into the disappearance of 4-year-old Madeleine McCann, Sky News said.

British police supplied a list of 52 pedophiles to Portuguese authorities investigating the girl's disappearance in May and all but one has been cleared, Sky News said. The suspect's identity hasn't been revealed, FOX News said.

McCann disappeared from a hotel room as her parents dined at a nearby restaurant while the family vacationed at a Portuguese resort